2181375

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{277}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 4510272

約数和(自身を除く): 2328897

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 277, 315, 375, 525, 831, 875, 1125, 1385, 1575, 1939, 2493, 2625, 4155, 5817, 6925, 7875, 9695, 12465, 17451, 20775, 29085, 34625, 48475, 62325, 87255, 103875, 145425, 242375, 311625, 436275, 727125, 2181375]

約数ペア:

[(1, 2181375), (3, 727125), (5, 436275), (7, 311625), (9, 242375), (15, 145425), (21, 103875), (25, 87255), (35, 62325), (45, 48475), (63, 34625), (75, 29085), (105, 20775), (125, 17451), (175, 12465), (225, 9695), (277, 7875), (315, 6925), (375, 5817), (525, 4155), (831, 2625), (875, 2493), (1125, 1939), (1385, 1575)]